romney and biden vs. ryan. tonight, a debate you won't see anywhere else. two presidential candidates not afraid to speak their minds about the issues that matter most. gary johnson, libertarian nominee, and jill stein, green party nominee. they weren't allowed in the debate so we brought them here to add their voices to the national discussion. we'll cover a lot of topics from the economy to social issue. but as third, even fourth party candidates, i decided to start with the obvious question, though -- why are you running? >> i'm running as a mother and a medical doctor really concerned about the direction we're going. and what propelled me into this race at this time, and i've been an activist for two decades really. people ask what kind of medicine i'm practicing, and i say political medicine because it's the mother of all illnesses. we got to fix this one in order to fix everything else that ails us. what propelled me into this race was when the president put medicare and social security on the chopping block as the solution to the debt ceiling crisis